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New Cultivar Developed

동할미 발생이 적은 고품질 중만생종 벼 ‘영진’

이종희*, 조준현, 이지윤, 송유천, 박동수, 신동진, 이소명

Youngjin: A Rice Variety with Low Cracked Kernels, Mid-late Maturation, and Good Eating Quality

Korean Journal of Breeding Science 2021;53(1):77-82.
Published online: March 1, 2021

농촌진흥청 국립식량과학원 논이용작물과

Paddy Crop Research Division, NICS, RDA, Miryang 50424, Republic of Korea

* Corresponding Author (E-mail: ccriljh@korea.kr, Tel: +82-55-350-1168, Fax: +82-55-352-3059)
• Received: February 2, 2021   • Revised: February 19, 2021   • Accepted: February 19, 2021

Copyright © 2021 by the Korean Society of Breeding Science

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Youngjin: A Rice Variety with Low Cracked Kernels, Mid-late Maturation, and Good Eating Quality
Korean. J. Breed. Sci.. 2021;53(1):77-82.   Published online March 1, 2021
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Youngjin: A Rice Variety with Low Cracked Kernels, Mid-late Maturation, and Good Eating Quality
Korean. J. Breed. Sci.. 2021;53(1):77-82.   Published online March 1, 2021
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Youngjin: A Rice Variety with Low Cracked Kernels, Mid-late Maturation, and Good Eating Quality
Image Image
Fig. 1 Genealogical diagram of ‘Youngjin’.
Fig. 2 Pedigree diagram of ‘Youngjin’.
Youngjin: A Rice Variety with Low Cracked Kernels, Mid-late Maturation, and Good Eating Quality

Major agronomic traits and yield components of ‘Youngjin’.

(LAT : '14~'16)

Variety Heading date Culm length (cm) Panicle length (cm) No. of panicle per hill No. of Spikelets per panicles Ratio of ripened grain (%) 1000 grain weight (g)
Youngjin 8.16 63* 21ns 13ns 124ns 83.0ns 20.9ns
Nampyeong 8.14 74 20 14 108 76.0 21.2

*significant at p<0.05 by DMRT

nsno significant.

Abiotic stress response of ‘Youngjin’.

(LAT : '14~'16)

Variety Germination abilityz Lodging tolerancey Cold tolerancex



LTG PHS LI PR (g) DLT (1-9) DHD (days) GF (%) PA
Youngjin 64.0ns 9.9ns 72 1,605 1 13 32.0ns 7
Nampyeong 41.7 8.3 92 1,689 1 9 32.0 6

zLTG: Low temperature germination, PHS: Pre harvest sprouting

yLI: Index, PR: Pushing resistance, DLT: Degree of lodging tolerance in transplanting field

xDHD: Delayed heading date, GF: Grain fertility PA: Phenotypic acceptability

nsno significant.

Reaction to leaf and neck blast disease of ‘Youngjin’.

(LAT : '14~'16)

Variety Leaf blast disease Neck blast disease


No. of tested sitesz Ave. Percentage of diseased panicle (%)


R (0~3) M (4~6) S (7~9) Jecheon Icheon Jinju Milyang
Youngjin 1 10 1 5.4ns 0.1ns 2.5ns 0.1ns 0.0ns
Nampyeong 4 8 0 4.3 0.0 0.2 0.1 0.0

zR: Resistant; M: Moderate; S: Susceptible

nsno significant.

Reaction to bacterial blight, virus diseases and insect pests of ‘Youngjin’.

(LAT : '14~'16)

Variety Bacterial blight Virus diseasez Insect pestsy



K1 K2 K3 K3a RSV RDV RBSDV BPH SBPH
Youngjin Rx R R S R S S S S
Nampyeong S S S S R M S S S

zRSV: Rice stripe virus, RDV: Rice dwarf virus, RBSDV: Rice black Stripe dwarf virus

yBPH: Brown planthopper, SBPH: Small Brown planthopper

xR: Resistant M: Moderate S: Susceptible

nsno significant.

Grain shape of rough rice and brown rice of ‘Youngjin’.

(LAT : '14~'16)

Variety Rough rice Brown rice


Length Width Thickness Ratio of L/W Length Width Thickness Ratio of L/W
Youngjin 6.97ns 3.15ns 2.17ns 2.21ns 4.84ns 2.83ns 1.99ns 1.71ns
Nampyeong 7.02 3.27 2.23 2.14 4.97 2.90 1.93 1.71

nsno significant.

Physiochemical and milling properties of ‘Youngjin’.

(LAT : '14~'16)

Variety Transl ucency (1-9) WC/WB (0-9) Amylose content (%) Protein content (%) Alkali digestion value (1-7) Head rice ratio (%) Paratablitity
Youngjin 1 0/0 20.1ns 5.8ns 6.4ns 97.6ns 0.29
Nampyeong 1 0/0 18.9 5.9 6.4 96.6 0.11

nsno significant.

Comparison of cracked grain percentage of brown rice and milled rice.

Varieties Percentage of cracked grain (%)

Brown rice Milled rice
Youngjin 8.8cz 18.0c
Nampyeong 7.1c 14.8c
Ilpum 32.8b 35.9b
Saeilmi 42.6a 41.3a
Yeonghojinmi 38.7ab 43.7a

zsignificant at p<0.05 by DMRT

Yield of milled rice at local adaptability test of ‘Youngjin’.

(LAT : '14~'16)

Cultivation season Region No.of tested sites Yield of milled rice (kg/ha)

Youngjin (A) Nampyeong (B) Index (A/B)
Ordinary season Yeongnam plain 4 585 590 99
costal area 1 516 521 99
Average 5 568ns 576 99
Doulbe croping Yeongnam plain 519ns 540 96

nsno significant.

Table 1 Major agronomic traits and yield components of ‘Youngjin’. (LAT : '14~'16)

*significant at p<0.05 by DMRT

nsno significant.

Table 2 Abiotic stress response of ‘Youngjin’. (LAT : '14~'16)

zLTG: Low temperature germination, PHS: Pre harvest sprouting

yLI: Index, PR: Pushing resistance, DLT: Degree of lodging tolerance in transplanting field

xDHD: Delayed heading date, GF: Grain fertility PA: Phenotypic acceptability

nsno significant.

Table 3 Reaction to leaf and neck blast disease of ‘Youngjin’. (LAT : '14~'16)

zR: Resistant; M: Moderate; S: Susceptible

nsno significant.

Table 4 Reaction to bacterial blight, virus diseases and insect pests of ‘Youngjin’. (LAT : '14~'16)

zRSV: Rice stripe virus, RDV: Rice dwarf virus, RBSDV: Rice black Stripe dwarf virus

yBPH: Brown planthopper, SBPH: Small Brown planthopper

xR: Resistant M: Moderate S: Susceptible

nsno significant.

Table 5 Grain shape of rough rice and brown rice of ‘Youngjin’. (LAT : '14~'16)

nsno significant.

Table 6 Physiochemical and milling properties of ‘Youngjin’. (LAT : '14~'16)

nsno significant.

Table 7 Comparison of cracked grain percentage of brown rice and milled rice.

zsignificant at p<0.05 by DMRT

Table 8 Yield of milled rice at local adaptability test of ‘Youngjin’. (LAT : '14~'16)

nsno significant.